Sealant encased blocker for LCD or LCOS panel

• US 7,268,850 B2
• Filed: 06/13/2002
• Issued: 09/11/2007
• Est. Priority Date: 06/14/2001
• Status: Expired due to Term

• Current Assignee: Himax Technologies Incorporated
• Original Assignee: Himax Technologies Ltd. (Himax Technologies Incorporated)
• Inventors: Liao, Bing-Jei
• Primary Examiner(s): TON, MINH TOAN T
• Application Number:
  US10/167,421
• Publication Number:
  US 20020191141A1
• Time in Patent Office: 1,916 Days
• Field of Search: 349/155, 349/156, 349/153
• US Class Current: 349/153
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/136277 formed on a semiconductor substrate, e.g. of silicon

Abstract

A panel with a blocker comprising: an upper plate, a lower plate opposite to said upper plate, a liquid crystal layer, with which a gap between the upper plate and lower plate is filled, a blocker formed on the edge of said lower plate; and a sealant formed next to said blocker, wherein the blocker separates the sealant from the liquid crystal layer. The panel of the present invention can be a LCD panel or a LCOS panel.

Claims

1. A panel with a blocker, comprising:

an upper plate;

a lower plate opposite to said upper plate, wherein said blocker is formed along a periphery of said lower plate;

a sealant formed in said blocker, for connecting the upper plate and the lower plate, said sealant being free of photo fiber, said blocker serving to support said sealant, wherein said blocker includes an inner blocking plate and an outer blocking plate, said outer blocking plate has a smaller height than said inner blocking plate, and said sealant is positioned between said outer blocking plate and said inner blocking plate; and

a layer of liquid crystal molecules, filling a gap between said upper plate and said lower plate, said layer of liquid crystal molecules being separated from said sealant by said blocker.

2. The panel according to claim 1, further comprising a plurality of photo spacers positioned at an area other than the periphery of the lower plate, said photo spacers and said blocker both being formed of a same material that does not contaminate said liquid crystal molecules.

3. The panel according to claim 1, wherein said inner blocking plate is positioned between said sealant and said layer of liquid crystal molecules.

4. The panel according to claim 1, wherein said panel is a liquid crystal display (LCD) panel.

5. The panel according to claim 1, wherein said panel is a liquid crystal on silicon (LCOS) panel.

6. The panel according to claim 1, wherein said sealant surrounds the liquid crystal molecules.

7. The panel according to claim 1, wherein said sealant is a UV gel.

8. A panel comprising:

an upper plate;

a lower plate opposite to, and spaced by a gap from said upper plate;

a blocker formed along a periphery of said lower plate, wherein said blocker includes an inner blocking plate and an outer blocking plate, and said outer blocking plate has a smaller height than said inner blocking plate;

a sealant formed in said blocker and positioned between said outer blocking plate and said inner blocking plate, for connecting the upper plate and the lower plate, said sealant being free of photo fiber, said blocker serving to support said sealant; and

a plurality of liquid crystal molecules filing the gap between said upper plate and said lower plate, said plurality of liquid crystal molecules being separated from said sealant by said blocker.

9. The panel according to claim 8, further comprising a plurality of photo spacers positioned at an area other than the periphery of the lower plate, said photo spacers and said blocker both being formed of a same material that does not contaminate said liquid crystal molecules.

10. The panel according to claim 8, wherein said inner blocking plate is positioned between said sealant and said liquid crystal molecules.

11. The panel according to claim 8, wherein said panel is a liquid crystal display (LCD) panel.

12. The panel according to claim 8, wherein said panel is a liquid crystal on silicon (LCOS) panel.

13. The panel according to claim 8, wherein said sealant surrounds the liquid crystal molecules.

14. The panel according to claim 8, wherein said sealant is a UV gel.

15. A panel, comprising:

an upper plate;

a lower plate opposite to said upper plate, wherein said upper plate and said lower plate are connected by a sealant;

liquid crystal molecules deposited in a gap between said upper plate and said lower plate, said sealant bonding to the upper and lower plates so as to hold them in a fixed spatial relation; and

a blocker formed in said gap, said blocker including an inner blocking plate and an outer blocking plate, said sealant positioned between said inner blocking plate and said outer blocking plate, and said inner blocking plate separating said liquid crystal molecules and said sealant so as to prevent said liquid crystal molecules from being contaminated by said sealant;

wherein said outer blocking plate has a smaller height than said inner blocking plate, whereby the panel contains no excess sealant between the inner and outer blocking plates.

16. The panel according to claim 15, wherein said liquid crystal molecules are surrounded by said blocker.

17. The panel according to claim 15, wherein said inner blocking plate and said outer blocking plate are rectangle-shaped or trapezoid-shaped.

18. The panel according to claim 15, wherein said panel is a liquid crystal display (LCD) panel or a liquid crystal on silicon (LCOS) panel.

19. The panel according to claim 15, wherein said sealant is a UV gel.

20. The panel according to claim 16, wherein said sealant surrounds the liquid crystal molecules, and said outer blocking plate surrounds said sealant, said inner blocking plate and said liquid crystal molecules.

21. The panel according to claim 15, wherein said sealant is free of photo fiber, said blocker serving to support said sealant.

22. The panel according to claim 15, further comprising a plurality of photo spacers positioned at an area other than the periphery of the lower plate, said photo spacers and said blocker both being formed of a same material that does not contaminate said liquid crystal molecules.

23. A panel, comprising:

an upper plate;

a lower plate opposite to said upper plate;

a blocker formed along a periphery of said lower plate, wherein said blocker includes two blocking plates forming a trench therebetween;

a sealant formed in said blocker and directly adhered to said upper plate and said lower plate, said blocking plates limiting said sealant within said trench; and

a layer of liquid crystal molecules, filling a gap between said upper plate and said lower plate, said layer of liquid crystal molecules being separated from said sealant by said blocker.

24. The panel according to claim 23, wherein said sealant surrounds the liquid crystal molecules.

25. The panel according to claim 23, wherein said sealant is a UV gel.

26. The panel according to claim 23 further comprising a plurality of photo spacers positioned at an area other than the periphery of the lower plate, said photo spacers and said blocker both being formed of a same material that does not contaminate said liquid crystal molecules.

27. The panel according to claim 23, wherein said panel is a liquid crystal display (LCD) panel or a liquid crystal on silicon (LCOS) panel.

28. The panel according to claim 23, wherein said sealant is a gel.